std::error_code 类型的值,保有来自 e 的错误码编号,关联到错误类别 "iostream"。 示例运行此代码 #include <iostream> #include <system_error> int main() { std::error_code ec = std::make_error_code(std::io_errc::stream); // 因为有重载方法和 is_error_code_enum 特化,所以可以这样操作 ec...
构造一个std::error_code从类型的值中提取std::io_errc好像returnstd::error_code(static_cast<int>(e),std::iostream_category())的构造函数调用此函数。std::error_code当给一个std::io_errc争论。 参数 e - error code number 返回值 类型值std::error_code保存错误代码号的e与错误类别关联"iostream...
std::error_code make_error_code( std::io_errc e ) noexcept; (since C++11) Constructs an std::error_code object from a value of type std::io_errc as if by return std::error_code(static_cast<int>(e), std::iostream_category()). ...
std::error_code make_error_code( std::future_errc e ); (since C++11) 构造一个std::error_code从类型的值中提取std::future_errc好像是通过: std::error_code(static_cast<int>(e),std::future_category())... 的构造函数调用此函数。std::error_code当给一个std::future_errc争论。
error_code (C++11) holds a platform-dependent error code (class) future_errc (C++11) identifies the future error codes (enum) make_error_code(std::errc) (C++11) creates error code value for errc enum e (function) make_error_code(std::io_errc) (C++11) constructs an ...
如果std::errc可以隐式转换为error_code，它将使用现有的显式转换（make_error_code）来实现可以想象的...
1、启动 vagrant 时,报错:Stderr: VBoxManage.exe: error: WHvCapabilityCodeHypervisorPresent is FALSE! Make sure you have enabled the ‘Windows Hypervisor Platform’ feature. (VERR_NEM_NOT_AVAILABLE).。如图1 图1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ...
1、启动 vagrant 时,报错:Stderr: VBoxManage.exe: error: WHvCapabilityCodeHypervisorPresent is FALSE! Make sure you have enabled the ‘Windows Hypervisor Platform’ feature. (VERR_NEM_NOT_AVAILABLE).。如图1 图1 1 2 3 4 5 6 7 8 9
std::errc Non-member functions make_error_code make_error_condition Helper classes is_error_condition_enum Defined in header<system_error> std::error_codemake_error_code(std::errce)noexcept; (since C++11) Creates error code value forerrcenume. ...
1、启动 vagrant 时,报错:Stderr: VBoxManage.exe: error: WHvCapabilityCodeHypervisorPresent is FALSE! Make sure you have enabled the ‘Windows Hypervisor Platform’ feature. (VERR_NEM_NOT_AVAILABLE).。如图1 图1 1 2 3 4 5 6 7 8 9